On May 14, 2009, at 7:50 PM, Glynn Clements wrote:
William Kyngesburye wrote:
http://trac.osgeo.org/grass/ticket/598
configure needs to temporarily strip out 64bit arch flags on OSX for
the TclTk Aqua tests. To do this, based on the OpenGL setting
selected (TclTk Aqua is dependent on OpenGL setting = aqua), the
opengl test must happen before the TclTk tests.
I don't see anything dependent on TclTk that would be affected if the
tcltk tests are moved to after the opengl tests.
Comments from the configure/make guru?
Will NVIZ cope with a 32-bit Tcl/Tk but 64-bit OpenGL?
When it comes to linking NVIZ, the command will include both the
Tcl/Tk linker flags and the OpenGL linker flags. There's no point in
configure testing whether linking a test program against Tcl/Tk works
without certain linker flags if NVIZ itself is going to be linked with
those flags.
The system frameworks (including OpenGL) on OSX 10.5 are all quad-
architecture - ppc/intel, 32+64bit. Only the deprecated Carbon stuff
that wxPython and Tk rely on are 32bit-only. If the system was all
only 64bit, we'd have a 64bit wxPython and 64bit TclTk by now.
So, when I configure for a quad-arch GRASS (adding arch flags to
CFLAGS and LDFLAGS), it will test the TclTk linking with the same, and
fail to link because 64bit arches are missing.
I plan to add a $(subst) command to the nviz makefile (and a couple
others that link Tk libraries) to strip out the 64bit flags on OSX
when OpenGL aqua is used. I have that worked out and tested (same
thing I used in the wx nviz and vdigit makefiles before the switch to
setup.py), it just needs the configure tk tests to pass.
-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/
All generalizations are dangerous, even this one.
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